#include<iostream>
using namespace std;

struct Point {
    private:
        double x,y;
    public:
        void setXY(double a,double b) {
            x = a;
            y = b;
        }
        void display() {
            cout << x << "\t" << y << endl;
        }
};

int main() {
    Point a;
    a.setXY(10,10);
    a.display();
    return 0;
}
